Company Filing History:
3 out of 1,027 
2 out of 3 Years Active: 2025
Title: Innovations of Hideaki Takahoshi
Introduction
Hideaki Takahoshi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, particularly through his innovative optical filters. With a total of two patents to his name, Takahoshi's work exemplifies the intersection of advanced materials and practical applications.
Latest Patents
Takahoshi's latest patents focus on the development of advanced optical filters. The first patent describes an optical filter that includes a substrate and a dielectric multilayer film laid on or above at least one major surface of the substrate. This film consists of at least two different layers, with specific properties such as a spin density of 5.0×10/nm·cm or larger. It also features a nanoindentation hardness of 5.5 GPa or higher, a maximum transmittance at an incident angle of 0° in a wavelength range of 400 nm to 680 nm of 6% or lower, and a maximum reflectance at an incident angle of 5° in the same wavelength range of 20% or lower. The average transmittance at an incident angle of 0° in at least one wavelength range having a width of 50 nm is 90% or higher.
The second patent also pertains to an optical filter, which includes a substrate and a dielectric multilayer film with four or more films having a spin density of 5.0×10/nm·cm or larger. Each of these films has a minimum thickness of 1.5 nm to 5 nm. Similar to the first patent, it maintains a maximum transmittance at an incident angle of 0° in a wavelength range of 400 nm to 680 nm of 6% or lower, and a maximum reflectance at an incident angle of 5° in the same wavelength range of 20% or lower. Additionally, it achieves an average transmittance at an incident angle of 0° in at least one wavelength range having a width of 40 nm included in a wavelength range of 800 nm to 1570 nm of 90% or higher.
Career Highlights
Throughout his career, Hideaki Takahoshi has worked with prominent companies in the optical industry, including AGC Inc. and Optical Coatings Japan. His experience in these organizations has allowed him to refine his skills and